package cn.edu.sdjzu.xg2106.controller;

import cn.edu.sdjzu.exception.BysjException;
import cn.edu.sdjzu.xg2106.domain.Department;
import cn.edu.sdjzu.xg2106.service.DepartmentService;
import cn.edu.sdjzu.xg2106.util.Condition;
import cn.edu.sdjzu.xg2106.util.ControllerHelper;
import cn.edu.sdjzu.xg2106.util.JSONUtil;
import cn.edu.sdjzu.xg2106.util.Pagination;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Collection;
import java.util.List;
@WebServlet("/DepReadCtrl")
public class DepartmentReadCtrl {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        response.setContentType("application/json;charset=UTF-8");
        JSONObject message = new JSONObject();
        String id_str = request.getParameter("id");
        Integer id_int = Integer.parseInt(id_str);
        try{
            Department department = DepartmentService.getInstance().find(id_int);
            String dep_json = JSON.toJSONString(department, SerializerFeature.DisableCircularReferenceDetect);
            response.getWriter().println(dep_json);
        }catch (BysjException e){
            message.put("message",e.getMessage());
            response.getWriter().println(message);
            e.printStackTrace();
        }catch (SQLException e){
            message.put("message","数据库操作异常");
            response.getWriter().println(message);
            e.printStackTrace();
        }catch (Exception e){
            message.put("message","网络异常");
            response.getWriter().println(message);
            e.printStackTrace();
        }
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException{
        JSONObject message_jsonObj = new JSONObject();
        response.setContentType("application/json;charset=UTF-8");
        String req_jsonStr = JSONUtil.getJSON(request);
        JSONObject req_jsonObj = JSON.parseObject(req_jsonStr);
        if (req_jsonObj == null){
            message_jsonObj.put("message","未收到请求消息！");
            response.getWriter().println(message_jsonObj);
            return;
        }
        try {
            Pagination pagination = ControllerHelper.getPagination(req_jsonObj);
            List<Condition> conditionList = ControllerHelper.getConditions(req_jsonObj);
            Collection<Department> deps = DepartmentService.getInstance().findAll(pagination,conditionList);
            message_jsonObj.put("totalNum",pagination.getTotalNum());
            message_jsonObj.put("records",deps);
            response.getWriter().println(message_jsonObj);
        }catch (BysjException e){
            message_jsonObj.put("message",e.getMessage());
            response.getWriter().println(message_jsonObj);
            e.printStackTrace();
        } catch (SQLException e) {
            message_jsonObj.put("message","数据库操作异常");
            response.getWriter().println(message_jsonObj);
            e.printStackTrace();
        }catch (Exception e){
            message_jsonObj.put("message","网络异常");
            response.getWriter().println(message_jsonObj);
            e.printStackTrace();
        }
    }
}
